In an event today at the CTIA conference, case maker OtterBox announced it was acquiring waterproof case maker LifeProof. OtterBox, with more than 600 employees, makes cases for a variety of different phone and tablet models, including the iPhone and iPad. The company claims it current holds 23% market share in the case market and is approaching $1 billion in yearly sales. OtterBox's newest Apple-related case is the ultra durable Armor Series iPhone case. LifeProof's main case is its waterproof iPhone case, but it also makes the